The BlackBerry® Administration Service Application Server (BAS-AS) continues to stop and restart. The following error appears when the administrator attempts to log in to the BlackBerry Administration Service:

Page cannot be displayed when opening the BlackBerry Administration Service.

The BlackBerry Administration Service instances use User Datagram Protocol (UDP) multi-cast to communicate with each other. If the inbound default UDP ports are in use or not available, the service does not start correctly.

Workaround 1

Reserve the port that is being used by the other application.

For instructions on reserving the ports that are required by BlackBerry Enterprise Server services, visit the Microsoft Help and Support site and search for "How to reserve a range of ephemeral ports on a computer that is running Windows® Server 2003 or Windows® 2000 Server."

Workaround 2

Stop the DNS Client and DNS Server Services and restart the BAS-AS service. Once the BAS-AS service has completely started, restart the two DNS services.